Fourier transform ion cyclotron resonance study of the dehydrogenative polymerization of allene and propyne induced by W+ in the gas phase

✍ Scribed by Azedine Ferhati; Georges Sozzi; Gilles Ohanessian

• Publisher: John Wiley and Sons
• Year: 1993
• Tongue: English
• Weight: 851 KB
• Volume: 28
• Category: Article
• ISSN: 1076-5174
• DOI: 10.1002/oms.1210281216

✦ Synopsis

Abstract

A Fourier transform ion cyclotron resonance study of the gas‐phase reaction of W^+^ with allene is reported. W^+^ successively dehydrogenates at least nine allene molecules, leading to the formation of a series of WC~3__n__~H ions, with WC~27~H as the largest product observed after a reaction delay of 40 s. Starting from the third reaction, there is a competition between elimination of H~2~ and C~2~H~2~ at each step. The activation of propyne was also investigated and found to lead to essentially the same sequence as with allene. The reaction of W^+^ with 1,1‐d~2~‐allene and collision‐induced dissociation spectra of product ions are used to discuss a plausible mechanism for the formation and structures of some of the species observed.